stats_dens_pmf_poisson
(PECL stats >= 1.0.0)
stats_dens_pmf_poisson — Probability mass function of the Poisson distribution
Description
float stats_dens_pmf_poisson ( float $x , float $lb ) Returns the probability mass at x, where the random variable follows the Poisson distribution whose parameter is lb.
Parameters
x
The value at which the probability mass is calculated
lb
The parameter of the Poisson distribution
Return Values
The probability mass at x or FALSE for failure.
← stats_dens_pmf_negative_binomial
stats_dens_t →
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